<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            margin: 0;
            padding: 0;
        }

        .top {
            height: 200px;
            background-color: skyblue;

        }

        .head {
            height: 100px;
            background-color: #db7093;
            position: sticky;
            top: 0;
        }

        .main {
            width: 800px;
            margin: 0 auto;
            min-height: 1400px;
        }

        .main .left {
            width: 200px;
            height: 500px;
            background-color: #f0e68c;
            float: left;
            position: sticky;
            top: 120px;
        }

        .main .righ {
            width: 580px;
            height: 800px;
            float: right;
        }

        .main .righ .item1 {
            width: 100%;
            height: 200px;
            background-color: skyblue;
            margin: 20px 0;
        }
        .main .righ .item2 {
            width: 100%;
            height: 200px;
            background-color: pink;
            margin: 20px 0;
        }
    </style>
</head>

<body>
    <div class="top"></div>
    <div class="head"></div>
    <div class="main">
        <div class="left"></div>
        <div class="righ">
            <div class="item1"></div>
            <div class="item2"></div>
            <div class="item1"></div>
            <div class="item2"></div>
            <div class="item1"></div>
            <div class="item2"></div>
        </div>
    </div>
</body>

</html>
